<div style="margin: 10px;">
    <!-- text button -->
    <button class="btn btn-default add-item-btn" id="text-btn" style="margin-right: 5px;"><i class="fa fa-pencil"></i></button>
    <!-- image button -->
    <button class="btn btn-default add-item-btn" id="image-btn" style="margin-right: 5px;"><i class="fa fa-picture-o"></i></button>
    <!-- video button -->
    <button class="btn btn-default add-item-btn" id="video-btn" style="margin-right: 5px;"><i class="fa fa-film"></i></button>
    <!-- sound button -->
    <button class="btn btn-default add-item-btn" id="sound-btn" style="margin-right: 5px;"><i class="fa fa-volume-off"></i></button>
    <!-- link button -->
    <button class="btn btn-default add-item-btn" id="link-btn" style="margin-right: 5px;"><i class="fa fa-link"></i></button>
</div>
